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xenocara/xserver/hw/kdrive/ephyr/ephyrhostglx.c

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/*
* Xephyr - A kdrive X server thats runs in a host X window.
* Authored by Matthew Allum <mallum@openedhand.com>
*
* Copyright © 2007 OpenedHand Ltd
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of OpenedHand Ltd not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. OpenedHand Ltd makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* OpenedHand Ltd DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL OpenedHand Ltd BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
* a lots of the content of this file has been adapted from the mesa source
* code.
* Authors:
* Dodji Seketeli <dodji@openedhand.com>
*/
#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
/*
* including some server headers (like kdrive-config.h)
* might define the macro _XSERVER64
* on 64 bits machines. That macro must _NOT_ be defined for Xlib
* client code, otherwise bad things happen.
* So let's undef that macro if necessary.
*/
#ifdef _XSERVER64
#undef _XSERVER64
#endif
#include <X11/Xlibint.h>
#include <GL/glx.h>
#include <GL/internal/glcore.h>
#include <GL/glxproto.h>
#include <GL/glxint.h>
#include "ephyrhostglx.h"
#define _HAVE_XALLOC_DECLS
#include "ephyrlog.h"
#include "hostx.h"
#ifdef XEPHYR_DRI
enum VisualConfRequestType {
EPHYR_GET_FB_CONFIG,
EPHYR_VENDOR_PRIV_GET_FB_CONFIG_SGIX,
EPHYR_GET_VISUAL_CONFIGS
};
static Bool ephyrHostGLXGetVisualConfigsInternal
(enum VisualConfRequestType a_type,
int32_t a_screen,
int32_t *a_num_visuals,
int32_t *a_num_props,
int32_t *a_props_buf_size,
int32_t **a_props_buf);
Bool
ephyrHostGLXGetMajorOpcode (int *a_opcode)
{
Bool is_ok=FALSE ;
Display *dpy=hostx_get_display () ;
static int opcode ;
int first_event_return=0, first_error_return=0;
EPHYR_RETURN_VAL_IF_FAIL (dpy, FALSE) ;
EPHYR_LOG ("enter\n") ;
if (!opcode) {
if (!XQueryExtension (dpy, GLX_EXTENSION_NAME, &opcode,
&first_event_return, &first_error_return)) {
EPHYR_LOG_ERROR ("XQueryExtension() failed\n") ;
goto out ;
}
}
*a_opcode = opcode ;
is_ok = TRUE ;
out:
EPHYR_LOG ("release\n") ;
return is_ok ;
}
Bool
ephyrHostGLXQueryVersion (int *a_major, int *a_minor)
{
Bool is_ok = FALSE ;
Display *dpy = hostx_get_display () ;
int major_opcode=0;
xGLXQueryVersionReq *req=NULL;
xGLXQueryVersionReply reply;
EPHYR_RETURN_VAL_IF_FAIL (a_major && a_minor, FALSE) ;
EPHYR_LOG ("enter\n") ;
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get major opcode\n") ;
goto out ;
}
EPHYR_LOG ("major opcode: %d\n", major_opcode) ;
/* Send the glXQueryVersion request */
memset (&reply, 0, sizeof (reply)) ;
LockDisplay (dpy);
GetReq (GLXQueryVersion, req);
req->reqType = major_opcode;
req->glxCode = X_GLXQueryVersion;
req->majorVersion = 2;
req->minorVersion = 1;
_XReply(dpy, (xReply*) &reply, 0, False);
UnlockDisplay (dpy);
SyncHandle ();
*a_major = reply.majorVersion ;
*a_minor = reply.minorVersion ;
EPHYR_LOG ("major:%d, minor:%d\n", *a_major, *a_minor) ;
is_ok = TRUE ;
out:
EPHYR_LOG ("leave\n") ;
return is_ok ;
}
/**
* GLX protocol structure for the ficticious "GXLGenericGetString" request.
*
* This is a non-existant protocol packet. It just so happens that all of
* the real protocol packets used to request a string from the server have
* an identical binary layout. The only difference between them is the
* meaning of the \c for_whom field and the value of the \c glxCode.
* (this has been copied from the mesa source code)
*/
typedef struct GLXGenericGetString {
CARD8 reqType;
CARD8 glxCode;
CARD16 length B16;
CARD32 for_whom B32;
CARD32 name B32;
} xGLXGenericGetStringReq;
/* These defines are only needed to make the GetReq macro happy.
*/
#define sz_xGLXGenericGetStringReq 12
#define X_GLXGenericGetString 0
Bool
ephyrHostGLXGetStringFromServer (int a_screen_number,
int a_string_name,
enum EphyrHostGLXGetStringOps a_op,
char **a_string)
{
Bool is_ok=FALSE ;
Display *dpy = hostx_get_display () ;
int default_screen = DefaultScreen (dpy);
xGLXGenericGetStringReq *req=NULL;
xGLXSingleReply reply;
int length=0, numbytes=0, major_opcode=0, get_string_op=0;
EPHYR_RETURN_VAL_IF_FAIL (dpy && a_string, FALSE) ;
EPHYR_LOG ("enter\n") ;
switch (a_op) {
case EPHYR_HOST_GLX_QueryServerString:
get_string_op = X_GLXQueryServerString;
break ;
case EPHYR_HOST_GLX_GetString:
get_string_op = X_GLsop_GetString;
EPHYR_LOG ("Going to glXGetString. strname:%#x, ctxttag:%d\n",
a_string_name, a_screen_number) ;
break ;
default:
EPHYR_LOG_ERROR ("unknown EphyrHostGLXGetStringOp:%d\n", a_op) ;
goto out ;
}
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get major opcode\n") ;
goto out ;
}
EPHYR_LOG ("major opcode: %d\n", major_opcode) ;
LockDisplay (dpy);
/* All of the GLX protocol requests for getting a string from the server
* look the same. The exact meaning of the a_for_whom field is usually
* either the screen number (for glXQueryServerString) or the context tag
* (for GLXSingle).
*/
GetReq (GLXGenericGetString, req);
req->reqType = major_opcode;
req->glxCode = get_string_op;
req->for_whom = default_screen;
req->name = a_string_name;
_XReply (dpy, (xReply *)&reply, 0, False);
length = reply.length * 4;
if (!length) {
numbytes = 0;
} else {
numbytes = reply.size;
}
EPHYR_LOG ("going to get a string of size:%d\n", numbytes) ;
*a_string = (char *) Xmalloc (numbytes +1);
if (!a_string) {
EPHYR_LOG_ERROR ("allocation failed\n") ;
goto out;
}
memset (*a_string, 0, numbytes+1) ;
if (_XRead (dpy, *a_string, numbytes)) {
UnlockDisplay (dpy);
SyncHandle ();
EPHYR_LOG_ERROR ("read failed\n") ;
goto out ;
}
length -= numbytes;
_XEatData (dpy, length) ;
UnlockDisplay (dpy);
SyncHandle ();
EPHYR_LOG ("strname:%#x, strvalue:'%s', strlen:%d\n",
a_string_name, *a_string, numbytes) ;
is_ok = TRUE ;
out:
EPHYR_LOG ("leave\n") ;
return is_ok ;
}
static Bool
ephyrHostGLXGetVisualConfigsInternal (enum VisualConfRequestType a_type,
int32_t a_screen,
int32_t *a_num_visuals,
int32_t *a_num_props,
int32_t *a_props_buf_size,
int32_t **a_props_buf)
{
Bool is_ok = FALSE ;
Display *dpy = hostx_get_display () ;
xGLXGetVisualConfigsReq *req;
xGLXGetFBConfigsReq *fb_req;
xGLXVendorPrivateWithReplyReq *vpreq;
xGLXGetFBConfigsSGIXReq *sgi_req;
xGLXGetVisualConfigsReply reply;
char *server_glx_version=NULL,
*server_glx_extensions=NULL ;
int j=0,
screens=0,
major_opcode=0,
num_props=0,
num_visuals=0,
props_buf_size=0,
props_per_visual_size=0;
int32_t *props_buf=NULL;
EPHYR_RETURN_VAL_IF_FAIL (dpy, FALSE) ;
screens = ScreenCount (dpy);
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get opcode\n") ;
goto out ;
}
LockDisplay(dpy);
switch (a_type) {
case EPHYR_GET_FB_CONFIG:
GetReq(GLXGetFBConfigs,fb_req);
fb_req->reqType = major_opcode;
fb_req->glxCode = X_GLXGetFBConfigs;
fb_req->screen = DefaultScreen (dpy);
break;
case EPHYR_VENDOR_PRIV_GET_FB_CONFIG_SGIX:
GetReqExtra(GLXVendorPrivateWithReply,
sz_xGLXGetFBConfigsSGIXReq
-
sz_xGLXVendorPrivateWithReplyReq,
vpreq);
sgi_req = (xGLXGetFBConfigsSGIXReq *) vpreq;
sgi_req->reqType = major_opcode;
sgi_req->glxCode = X_GLXVendorPrivateWithReply;
sgi_req->vendorCode = X_GLXvop_GetFBConfigsSGIX;
sgi_req->screen = DefaultScreen (dpy);
break;
case EPHYR_GET_VISUAL_CONFIGS:
GetReq(GLXGetVisualConfigs,req);
req->reqType = major_opcode;
req->glxCode = X_GLXGetVisualConfigs;
req->screen = DefaultScreen (dpy);
break;
}
if (!_XReply(dpy, (xReply*) &reply, 0, False)) {
EPHYR_LOG_ERROR ("unknown error\n") ;
UnlockDisplay(dpy);
goto out ;
}
if (!reply.numVisuals) {
EPHYR_LOG_ERROR ("screen does not support GL rendering\n") ;
UnlockDisplay(dpy);
goto out ;
}
num_visuals = reply.numVisuals ;
/* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for
* FIXME: FBconfigs?
*/
/* Check number of properties */
num_props = reply.numProps;
if ((num_props < __GLX_MIN_CONFIG_PROPS) ||
(num_props > __GLX_MAX_CONFIG_PROPS)) {
/* Huh? Not in protocol defined limits. Punt */
EPHYR_LOG_ERROR ("got a bad reply to request\n") ;
UnlockDisplay(dpy);
goto out ;
}
if (a_type != EPHYR_GET_VISUAL_CONFIGS) {
num_props *= 2;
}
props_per_visual_size = num_props * __GLX_SIZE_INT32;
props_buf_size = props_per_visual_size * reply.numVisuals;
props_buf = malloc (props_buf_size) ;
for (j = 0; j < reply.numVisuals; j++) {
if (_XRead (dpy,
&((char*)props_buf)[j*props_per_visual_size],
props_per_visual_size) != Success) {
EPHYR_LOG_ERROR ("read failed\n") ;
}
}
UnlockDisplay(dpy);
*a_num_visuals = num_visuals ;
*a_num_props = reply.numProps ;
*a_props_buf_size = props_buf_size ;
*a_props_buf = props_buf ;
is_ok = TRUE ;
out:
if (server_glx_version) {
XFree (server_glx_version) ;
server_glx_version = NULL ;
}
if (server_glx_extensions) {
XFree (server_glx_extensions) ;
server_glx_extensions = NULL ;
}
SyncHandle () ;
return is_ok;
}
Bool
ephyrHostGLXGetVisualConfigs (int32_t a_screen,
int32_t *a_num_visuals,
int32_t *a_num_props,
int32_t *a_props_buf_size,
int32_t **a_props_buf)
{
Bool is_ok = FALSE;
EPHYR_LOG ("enter\n") ;
is_ok = ephyrHostGLXGetVisualConfigsInternal (EPHYR_GET_VISUAL_CONFIGS,
a_screen,
a_num_visuals,
a_num_props,
a_props_buf_size,
a_props_buf) ;
EPHYR_LOG ("leave:%d\n", is_ok) ;
return is_ok;
}
Bool
ephyrHostGLXVendorPrivGetFBConfigsSGIX (int a_screen,
int32_t *a_num_visuals,
int32_t *a_num_props,
int32_t *a_props_buf_size,
int32_t **a_props_buf)
{
Bool is_ok=FALSE ;
EPHYR_LOG ("enter\n") ;
is_ok = ephyrHostGLXGetVisualConfigsInternal
(EPHYR_VENDOR_PRIV_GET_FB_CONFIG_SGIX,
a_screen,
a_num_visuals,
a_num_props,
a_props_buf_size,
a_props_buf) ;
EPHYR_LOG ("leave\n") ;
return is_ok ;
}
Bool
ephyrHostGLXSendClientInfo (int32_t a_major, int32_t a_minor,
const char* a_extension_list)
{
Bool is_ok = FALSE ;
Display *dpy = hostx_get_display () ;
xGLXClientInfoReq *req;
int size;
int32_t major_opcode=0 ;
EPHYR_RETURN_VAL_IF_FAIL (dpy && a_extension_list, FALSE) ;
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get major opcode\n") ;
goto out ;
}
LockDisplay (dpy);
GetReq (GLXClientInfo,req);
req->reqType = major_opcode;
req->glxCode = X_GLXClientInfo;
req->major = a_major;
req->minor = a_minor;
size = strlen (a_extension_list) + 1;
req->length += (size + 3) >> 2;
req->numbytes = size;
Data (dpy, a_extension_list, size);
UnlockDisplay(dpy);
SyncHandle();
is_ok=TRUE ;
out:
return is_ok ;
}
Bool
ephyrHostGLXCreateContext (int a_screen,
int a_visual_id,
int a_context_id,
int a_share_list_ctxt_id,
Bool a_direct)
{
Bool is_ok = FALSE;
Display *dpy = hostx_get_display ();
int major_opcode=0, remote_context_id=0;
xGLXCreateContextReq *req;
EPHYR_LOG ("enter. screen:%d, visual:%d, contextid:%d, direct:%d\n",
a_screen, a_visual_id, a_context_id, a_direct) ;
if (!hostx_allocate_resource_id_peer (a_context_id, &remote_context_id)) {
EPHYR_LOG_ERROR ("failed to peer the context id %d host X",
remote_context_id) ;
goto out ;
}
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get major opcode\n") ;
goto out ;
}
LockDisplay (dpy) ;
/* Send the glXCreateContext request */
GetReq(GLXCreateContext,req);
req->reqType = major_opcode;
req->glxCode = X_GLXCreateContext;
req->context = remote_context_id;
req->visual = a_visual_id;
req->screen = DefaultScreen (dpy);
req->shareList = a_share_list_ctxt_id;
req->isDirect = a_direct;
UnlockDisplay (dpy);
SyncHandle ();
is_ok = TRUE ;
out:
EPHYR_LOG ("leave\n") ;
return is_ok ;
}
Bool
ephyrHostDestroyContext (int a_ctxt_id)
{
Bool is_ok=FALSE;
Display *dpy=hostx_get_display ();
int major_opcode=0, remote_ctxt_id=0 ;
xGLXDestroyContextReq *req=NULL;
EPHYR_LOG ("enter:%d\n", a_ctxt_id) ;
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get major opcode\n") ;
goto out ;
}
if (!hostx_get_resource_id_peer (a_ctxt_id, &remote_ctxt_id)) {
EPHYR_LOG_ERROR ("failed to get remote glx ctxt id\n") ;
goto out ;
}
EPHYR_LOG ("host context id:%d\n", remote_ctxt_id) ;
LockDisplay (dpy);
GetReq (GLXDestroyContext,req);
req->reqType = major_opcode;
req->glxCode = X_GLXDestroyContext;
req->context = remote_ctxt_id;
UnlockDisplay (dpy);
SyncHandle ();
is_ok = TRUE ;
out:
EPHYR_LOG ("leave\n") ;
return is_ok ;
}
Bool
ephyrHostGLXMakeCurrent (int a_drawable,
int a_glx_ctxt_id,
int a_old_ctxt_tag,
int *a_ctxt_tag)
{
Bool is_ok=FALSE ;
Display *dpy = hostx_get_display () ;
int32_t major_opcode=0 ;
int remote_glx_ctxt_id=0 ;
xGLXMakeCurrentReq *req;
xGLXMakeCurrentReply reply;
EPHYR_RETURN_VAL_IF_FAIL (a_ctxt_tag, FALSE) ;
EPHYR_LOG ("enter. drawable:%d, context:%d, oldtag:%d\n",
a_drawable, a_glx_ctxt_id, a_old_ctxt_tag) ;
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get major opcode\n") ;
goto out ;
}
if (!hostx_get_resource_id_peer (a_glx_ctxt_id, &remote_glx_ctxt_id)) {
EPHYR_LOG_ERROR ("failed to get remote glx ctxt id\n") ;
goto out ;
}
LockDisplay (dpy);
GetReq (GLXMakeCurrent,req);
req->reqType = major_opcode;
req->glxCode = X_GLXMakeCurrent;
req->drawable = a_drawable;
req->context = remote_glx_ctxt_id;
req->oldContextTag = a_old_ctxt_tag;
memset (&reply, 0, sizeof (reply)) ;
if (!_XReply (dpy, (xReply*)&reply, 0, False)) {
EPHYR_LOG_ERROR ("failed to get reply from host\n") ;
UnlockDisplay (dpy);
SyncHandle ();
goto out ;
}
UnlockDisplay (dpy);
SyncHandle ();
*a_ctxt_tag = reply.contextTag ;
EPHYR_LOG ("context tag:%d\n", *a_ctxt_tag) ;
is_ok = TRUE ;
out:
EPHYR_LOG ("leave\n") ;
return is_ok ;
}
#define X_GLXSingle 0
#define __EPHYR_GLX_SINGLE_PUT_CHAR(offset,a) \
*((INT8 *) (pc + offset)) = a
#define EPHYR_GLX_SINGLE_PUT_SHORT(offset,a) \
*((INT16 *) (pc + offset)) = a
#define EPHYR_GLX_SINGLE_PUT_LONG(offset,a) \
*((INT32 *) (pc + offset)) = a
#define EPHYR_GLX_SINGLE_PUT_FLOAT(offset,a) \
*((FLOAT32 *) (pc + offset)) = a
#define EPHYR_GLX_SINGLE_READ_XREPLY() \
(void) _XReply(dpy, (xReply*) &reply, 0, False)
#define EPHYR_GLX_SINGLE_GET_RETVAL(a,cast) \
a = (cast) reply.retval
#define EPHYR_GLX_SINGLE_GET_SIZE(a) \
a = (GLint) reply.size
#define EPHYR_GLX_SINGLE_GET_CHAR(p) \
*p = *(GLbyte *)&reply.pad3;
#define EPHYR_GLX_SINGLE_GET_SHORT(p) \
*p = *(GLshort *)&reply.pad3;
#define EPHYR_GLX_SINGLE_GET_LONG(p) \
*p = *(GLint *)&reply.pad3;
#define EPHYR_GLX_SINGLE_GET_FLOAT(p) \
*p = *(GLfloat *)&reply.pad3;
Bool
ephyrHostGetIntegerValue (int a_current_context_tag, int a_int, int *a_val)
{
Bool is_ok=FALSE;
Display *dpy = hostx_get_display () ;
int major_opcode=0, size=0;
xGLXSingleReq *req=NULL;
xGLXSingleReply reply;
unsigned char* pc=NULL ;
EPHYR_RETURN_VAL_IF_FAIL (a_val, FALSE) ;
EPHYR_LOG ("enter\n") ;
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get major opcode\n") ;
goto out ;
}
LockDisplay (dpy) ;
GetReqExtra (GLXSingle, 4, req) ;
req->reqType = major_opcode ;
req->glxCode = X_GLsop_GetIntegerv ;
req->contextTag = a_current_context_tag;
pc = ((unsigned char *)(req) + sz_xGLXSingleReq) ;
EPHYR_GLX_SINGLE_PUT_LONG (0, a_int) ;
EPHYR_GLX_SINGLE_READ_XREPLY () ;
EPHYR_GLX_SINGLE_GET_SIZE (size) ;
if (!size) {
UnlockDisplay (dpy) ;
SyncHandle () ;
EPHYR_LOG_ERROR ("X_GLsop_GetIngerv failed\n") ;
goto out ;
}
EPHYR_GLX_SINGLE_GET_LONG (a_val) ;
UnlockDisplay (dpy) ;
SyncHandle () ;
is_ok = TRUE ;
out:
EPHYR_LOG ("leave\n") ;
return is_ok ;
}
Bool
ephyrHostIsContextDirect (int a_ctxt_id,
int *a_is_direct)
{
Bool is_ok=FALSE;
Display *dpy = hostx_get_display () ;
xGLXIsDirectReq *req=NULL;
xGLXIsDirectReply reply;
int major_opcode=0, remote_glx_ctxt_id=0;
EPHYR_LOG ("enter\n") ;
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get major opcode\n") ;
goto out ;
}
if (!hostx_get_resource_id_peer (a_ctxt_id, &remote_glx_ctxt_id)) {
EPHYR_LOG_ERROR ("failed to get remote glx ctxt id\n") ;
goto out ;
}
memset (&reply, 0, sizeof (reply)) ;
/* Send the glXIsDirect request */
LockDisplay (dpy);
GetReq (GLXIsDirect,req);
req->reqType = major_opcode;
req->glxCode = X_GLXIsDirect;
req->context = remote_glx_ctxt_id;
if (!_XReply (dpy, (xReply*) &reply, 0, False)) {
EPHYR_LOG_ERROR ("fail in reading reply from host\n") ;
UnlockDisplay (dpy);
SyncHandle ();
goto out ;
}
UnlockDisplay (dpy);
SyncHandle ();
*a_is_direct = reply.isDirect ;
is_ok = TRUE ;
out:
EPHYR_LOG ("leave\n") ;
return is_ok ;
}
#endif /*XEPHYR_DRI*/
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